In fruit flies, the allele for white eyes is recessive and found only on the X chromosome. If a white-eyed...?

Question

male is crossed with a homozygous red-eyed female, which of the following describes the eye-color(s) of the offspring?

a) red-eyed females, white-eyed males

b) white-eyed females, red-eyed males

c) all offspring have white eyes

d) all offspring have red eyes

Answer 1

So the male is Y X^w and the female is X^rX^r... the offspring would be all red eyed.

Male Offspring:

X^r Y and X^r Y

Female Offspring:

X^r X^w and X^r X^w